Here we discuss some aspects related to the MRNTN spacetime presented in the previous section. These aspects are those which consider to have relations to what we will discuss in the next section, namely the extremal charge black hole/CFT correspondence inspired by the Kerr/CFT conjecture [1]}. We start with the area of black hole by using the standard textbook formula,
\({\cal A} = \int \limits _0^{2\pi } {d\phi \int \limits _{ - 1}^1 {dx\sqrt{g_{\phi \phi } g_{xx} } } } = 4\pi \left(r_ + ^2 + l^2\right)\,.\) 
